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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Is steady and uniform
Takes place in straight line
Takes place in curve
Takes place in one direction

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Hydraulics and Fluid Mechanics in ME
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

None of the listed here
K.ρ
ρ/K
K/ρ

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Hydraulics and Fluid Mechanics in ME
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

(H - hf )/H
H/(H - hf )
(H + hf )/H
H/(H + hf )

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Hydraulics and Fluid Mechanics in ME
Practical fluids

possess surface tension
possess all the above properties
are compressible
are viscous

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Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

below be center of gravity
at the center of gravity
above the center of gravity
could be above or below e.g. depending on density of body and liquid

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Hydraulics and Fluid Mechanics in ME
The center of gravity of the volume of the liquid displaced by an immersed body is called

center of buoyancy
center of pressure
center of gravity
metacentre

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